base/process/memory.cc

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "base/debug/alias.h"
   6 #include "base/logging.h"
   7 #include "base/process/memory.h"
   8
   9 namespace base {
  10
  11 namespace {
  12
  13 // Breakpad server classifies base::`anonymous namespace'::OnNoMemory as
  14 // out-of-memory crash.
  15 NOINLINE void OnNoMemory(size_t size) {
  16   size_t tmp_size = size;
  17   base::debug::Alias(&tmp_size);
  18   LOG(FATAL) << "Out of memory. size=" << tmp_size;
  19 }
  20
  21 }  // namespace
  22
  23 void TerminateBecauseOutOfMemory(size_t size) {
  24   OnNoMemory(size);
  25 }
  26
  27 // Defined in memory_mac.mm for Mac.
  28 #if !defined(OS_MACOSX)
  29
  30 bool UncheckedCalloc(size_t num_items, size_t size, void** result) {
  31   const size_t alloc_size = num_items * size;
  32
  33   // Overflow check
  34   if (size && ((alloc_size / size) != num_items)) {
  35     *result = NULL;
  36     return false;
  37   }
  38
  39   if (!UncheckedMalloc(alloc_size, result))
  40     return false;
  41
  42   memset(*result, 0, alloc_size);
  43   return true;
  44 }
  45
  46 #endif
  47
  48 }  // namespace base